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The Associated Press
AP Top Science News at 11:08 a.m. EDT

Astronaut breaks US record: 521 days in space and counting
AP Photo
CAPE CANAVERAL, Fla. (AP) -- An astronaut has set a U.S. record for most time spent in space....

Off South Africa's coast, great white sharks are threatened
AP Photo
GANSBAAI, South Africa (AP) -- On the edge of a boat off this coastal village, Michael Rutzen stubs his cigarette into a soda can and stares pensively out to sea....

Scientists: Puffin chicks starving with less food available
PORTLAND, Maine (AP) -- Atlantic puffin chicks on Machias Seal Island in the Gulf of Maine have had the worst breeding season ever recorded, with the majority of chicks starving to death in burrows, scientists said....

Boy with double-hand transplant's next goal: Play football
PHILADELPHIA (AP) -- It's been just over a year since 9-year-old Zion Harvey received a double-hand transplant, and he said Tuesday what he really wants to do is play football....

Yearlong Mars simulation nears end on Mauna Loa
HILO, Hawaii (AP) -- Six scientists are close to wrapping up a year of near isolation in a Mars simulation on a Hawaii mountain....

New England drought means bolder bears, stressed fish
CONCORD, N.H. (AP) -- Bears are bolder, mosquitoes are multiplying and stream-dwelling fish are stressed. Beyond hurting crops and helping the tourism industry, New England's hot, dry summer also is affecting the region's wildlife....

Spacewalking astronauts install new front door for visitors
CAPE CANAVERAL, Fla. (AP) -- Spacewalking astronauts installed a new front door for visitors at the International Space Station on Friday, the crucial first step in welcoming commercial crew capsules as soon as next year....

More tests set for Yellowstone, tributaries after fish kill
BILLINGS, Mont. (AP) -- Wildlife workers will conduct tests on fish from additional areas of Montana to determine the extent of a disease blamed in a massive fish kill along the Yellowstone River, officials said Monday....

Tap water bacteria found in New Zealand woman who died
WELLINGTON, New Zealand (AP) -- Tests in New Zealand confirmed an elderly woman who died last week was suffering from the type of bacteria that tainted local tap water and sickened thousands of people in a small North Island town, officials said Friday....

EPA watchdog says government fails to study ethanol's impact
WASHINGTON (AP) -- The Obama administration has failed to study as legally required the impact of requiring ethanol in gasoline and ensuring that new regulations intended to address one problem do not actually make other problems worse, the Environmental Protection Agency inspector general said Thursday....